﻿using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Windows.ApplicationModel.Activation;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
using App1.Data;

// The Search Contract item template is documented at http://go.microsoft.com/fwlink/?LinkId=234240

namespace App1
{
    /// <summary>
    /// This page displays search results when a global search is directed to this application.
    /// </summary>
    public sealed partial class ResultadoBusca : App1.Common.LayoutAwarePage
    {
        List<DadosCapitulosLivro> ListaCapitulos = new List<DadosCapitulosLivro>();
        string textoBusca = string.Empty;
        List<Filter> filterList = new List<Filter>();

        public ResultadoBusca()
        {
            this.InitializeComponent();
        }

        /// <summary>
        /// Populates the page with content passed during navigation.  Any saved state is also
        /// provided when recreating a page from a prior session.
        /// </summary>
        /// <param name="navigationParameter">The parameter value passed to
        /// <see cref="Frame.Navigate(Type, Object)"/> when this page was initially requested.
        /// </param>
        /// <param name="pageState">A dictionary of state preserved by this page during an earlier
        /// session.  This will be null the first time a page is visited.</param>
        protected override void LoadState(Object navigationParameter, Dictionary<String, Object> pageState)
        {
            var queryText = navigationParameter as String;
           
            textoBusca = queryText.ToString();

            
            filterList.Add(new Filter("Todos", 0, true));

           
            // Buscar os dados

            DataSourceLivro fontedados = new DataSourceLivro();

            foreach (DadosCapitulosLivro capitulo in fontedados.TodosCapitulos)
            {
                foreach (CapituloLivro pagina in capitulo.Items)
                {
                                      
                    DadosCapitulosLivro dadospagina = new DadosCapitulosLivro(pagina.Codigo, pagina.Titulo + " - " + capitulo.Image.ToString(), pagina.Subtitulo, pagina.Image, pagina.Descricao,pagina.TipoExibicao);
                    ListaCapitulos.Add(dadospagina);
                }

                ListaCapitulos.Add(capitulo);
/*
                if (capitulo.Items.Count > 0)
                {
                    filterList.Add(new Filter(capitulo.Titulo, capitulo.Items.Count, false));
                }*/
            }  
                        
            this.DefaultViewModel["QueryText"] = '\u201c' + queryText + '\u201d';
            this.DefaultViewModel["Filters"] = filterList;
            this.DefaultViewModel["ShowFilters"] = filterList.Count > 1;
        }

        /// <summary>
        /// Invoked when a filter is selected using the ComboBox in snapped view state.
        /// </summary>
        /// <param name="sender">The ComboBox instance.</param>
        /// <param name="e">Event data describing how the selected filter was changed.</param>
        void Filter_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            // Determine what filter was selected
            var selectedFilter = e.AddedItems.FirstOrDefault() as Filter;
            if (selectedFilter != null)
            {
                // Mirror the results into the corresponding Filter object to allow the
                // RadioButton representation used when not snapped to reflect the change
                selectedFilter.Active = true;

                // TODO: Respond to the change in active filter by setting this.DefaultViewModel["Results"]
                //       to a collection of items with bindable Image, Title, Subtitle, and Description properties

               

                IEnumerable<DadosCapitulosLivro> searchResults = from el in ListaCapitulos
                                                     where el.Titulo.ToLower().Contains(textoBusca)
                                                     orderby el.Titulo ascending
                                                     select el;


                foreach (DadosCapitulosLivro item in searchResults)
                {
                    foreach (Filter filtro in filterList)
                    {
                        if (filtro.Name == item.Titulo)
                        {
                            filtro.Count++;
                        }
                    }
                   
                }


                this.DefaultViewModel["Results"] = searchResults;

                // Ensure results are found
                object results;
                IEnumerable<DadosCapitulosLivro> resultsCollection;

                if (this.DefaultViewModel.TryGetValue("Results", out results) &&
                    (resultsCollection = results as IEnumerable<DadosCapitulosLivro>) != null &&
                    resultsCollection.Count() != 0)
                {
                    VisualStateManager.GoToState(this, "ResultsFound", true);
                    return;
                }
            }

            // Display informational text when there are no search results.
            VisualStateManager.GoToState(this, "NoResultsFound", true);
        }

        /// <summary>
        /// Invoked when a filter is selected using a RadioButton when not snapped.
        /// </summary>
        /// <param name="sender">The selected RadioButton instance.</param>
        /// <param name="e">Event data describing how the RadioButton was selected.</param>
        void Filter_Checked(object sender, RoutedEventArgs e)
        {
            // Mirror the change into the CollectionViewSource used by the corresponding ComboBox
            // to ensure that the change is reflected when snapped
            if (filtersViewSource.View != null)
            {
                var filter = (sender as FrameworkElement).DataContext;
                filtersViewSource.View.MoveCurrentTo(filter);
            }
        }

        /// <summary>
        /// View model describing one of the filters available for viewing search results.
        /// </summary>
        private sealed class Filter : App1.Common.BindableBase
        {
            private String _name;
            private int _count;
            private bool _active;

            public Filter(String name, int count, bool active = false)
            {
                this.Name = name;
                this.Count = count;
                this.Active = active;
            }

            public override String ToString()
            {
                return Description;
            }

            public String Name
            {
                get { return _name; }
                set { if (this.SetProperty(ref _name, value)) this.OnPropertyChanged("Description"); }
            }

            public int Count
            {
                get { return _count; }
                set { if (this.SetProperty(ref _count, value)) this.OnPropertyChanged("Description"); }
            }

            public bool Active
            {
                get { return _active; }
                set { this.SetProperty(ref _active, value); }
            }

            public String Description
            {
                get { return String.Format("{0} ({1})", _name, _count); }
            }
        }

       

        private void resultsGridView_ItemClick_1(object sender, ItemClickEventArgs e)
        {
            if (((DadosCapitulosLivro)e.ClickedItem).Codigo.Contains("Item"))
            {
                this.Frame.Navigate(typeof(ItemDetailPage), ((DadosCapitulosLivro)e.ClickedItem).Codigo);
            }
            else
            {
                this.Frame.Navigate(typeof(ListaCapitulos), ((DadosCapitulosLivro)e.ClickedItem).Codigo);
            }
        }
    }
}
